Investigation of the sorption method of processing molybdenum-containing raw materials to extract rare metals

Abstract

The article investigates the sorption method of concentrating rare metals on various sorbents (brands “Purolight”: A-100, A-170, A-172 and BO-020) and determines the optimal conditions for their extraction. It is shown that the extraction of molybdenum on the sorbent “Purolight A-100” was 98%. The proposed sorption mechanism consists in the formation of molybdenum complexes with functional phosphor basics and sulfate groups of sorbents. Sorption of rhenium on the Purolite A-170 sorbent was 93%. Sorption of rhenium on the sorbent BO-020 is described by the Langmuir equation with a maximum static exchange capacity of 94%. Based on the sorption and desorption kinetics of molybdenum and rhenium on various ion-exchange sorbents, it was shown that the sorption of molybdenum and rhenium proceeds most efficiently on low-basic anion exchangers A-100 Mo and A-170, respectively, and after double recleaning of the “rough” rhenium concentrate, ammonium rhenium of qualification was obtained AR-0.

Crosslinked Polydiallyldimethylammonium Chloride Adsorbent for the Selective Separation of Rhenium Ions from Pregnant Leach Solutions

“…A variety of resins have been used for Re separation, and they can be reactivated and reused multiple times. Purolite A170 and A172 are widely used anion exchange resins specifically designed for the selective adsorption of rhenium anions, making them ideal for this application [ 13 ]. In a recent study led by Bozorov et al, they explored the sorption mechanism of Re from a binary Re-Mo solution using various sorbents, including A-100, A-170, A-172, and BO-020 [ 13 ].…”

“…Purolite A170 and A172 are widely used anion exchange resins specifically designed for the selective adsorption of rhenium anions, making them ideal for this application [ 13 ]. In a recent study led by Bozorov et al, they explored the sorption mechanism of Re from a binary Re-Mo solution using various sorbents, including A-100, A-170, A-172, and BO-020 [ 13 ]. Virolainen et al also employed Purolite A170-172 resins for the recovery of Re from sulfate solutions containing Mo and As [ 14 ].…”